gistfile1.js

// Helper classes
	
$.fn.changeClass = function(className, add) {
	add = add || false;
	return this.each(function() {
		if(add) {
			$(this).addClass(className);
		}
		else {
			$(this).removeClass(className);
		}
	});
};

$.fn.changeVisibility = function(show) {
	show = show || false;
	return this.each(function() {
		if(show) {
			$(this).show();
		}
		else {
			$(this).hide();
		}
	});	
};